Java Object 파일에 저장하기 (serialize)

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class Person implements Serializable {
	String name;
	int weight;

	public void setName(String name) {
		this.name = name;
	}

	public String getName() {
		return this.name;
	}

	public void setWeight(int weight) {
		this.weight = weight;
	}

	public int getWeight() {
		return this.weight;
	}

	public static void main(String[] args) throws IOException, ClassNotFoundException {

		// FILE WRITE
		Person p = new Person();
		p.setName("lee");
		p.setWeight(120);

		String path = "p.dat";

		ObjectOutputStream os = null;
		FileOutputStream fos = null;

		fos = new FileOutputStream(path);
		os = new ObjectOutputStream(fos);
		os.writeObject(p);

		// FILE READ
		ObjectInputStream ois = null;
		FileInputStream fis = null;

		fis = new FileInputStream("p.dat");
		ois = new ObjectInputStream(fis);

		Person p2 = (Person) ois.readObject();
		System.out.println(p2.getName());
		System.out.println(p2.getWeight());

		ois.close();

	}
}